Arcade Performance Index 2.1

This update brings additional vehicle support by displaying the actual vehicle name instead of the internal name. Below are the list of mods added!

• Gavril Vertex NA2 by @Inn0centJok3r
• Carbonworks F4 by @LucasBE
• Arima Monica/ELDY by @Docroswagge
• ETK K-Series Roadster by @LucasBE
• Ibishu...

Added 2 new tiers

• A+ (above A, below S)
• S+ (above S, below X)

Balanced rating scale
Performance Rating Numbers Adjusted

• More accurate calculations for both Top Speed and Acceleration
• Class ratings adjusted: D-Tier starts at 150 while X-Tier starts at 900
• Ratings now round to nearest 5 integer (350, 355, 360, etc)

Added support for multiple engines

• Now combines both engines if available for a combined power output...

• Pictures were not showing up in the mod information. This should fix it.
  
• Fixed min/max ratings displaying the wrong class (699, 700, etc should be properly displayed now)
  
• Back-end stuff: Removed unnecessary code and added comments